Default [Q]Headphone static noise

I am using a KF2 with CM10.1.3 (stable) made by Hashcode. Thanks to him I have gotten a lot more functionality of my Kindle Fire.

However, when I try to listen to some audio with headphones, I am getting quite noticeable static. Also, when I plug in my headphones and when audio is starting/pausing, I hear popping noises. This is present in both web videos and the Apollo music player. I have not changed the DSP settings from default. Is this a software or hardware problem? Is there anything I can do about this? Thanks